I replaced my trunk pan and need a measurement, can anyone help?

[West,J.71]

After replacing my trunk pan i'm having some panel matching problems on my 69 camaro. I need a measurement from the lowest part of the trunk pan,(where the drain plugs go ) strait up to the package tray bottom. I need to make sure the the quarters will be right once they are welded in,if its not too much trouble this would help me out tremendously. Thanks